Reject permissonState calls if userVisible is not present as parameter

LayoutTests/http/tests/push_messaging/resources/instrumentation-service-worker.js

 // Allows a document to exercise the Push API within a service worker by sending commands.
 
 // The port through which the document sends commands to the service worker.
 var port = null;
 
 // The most recently seen subscription.
 var lastSeenSubscription = null;
 
 self.addEventListener('message', function(workerEvent) {
     port = workerEvent.data;
 
     // Listen to incoming commands on the message port.
     port.onmessage = function(event) {
         if (typeof event.data != 'object' || !event.data.command)
             return;
-
+        var arguments = event.data.arg || {}

[Peter Beverloo, 2015/05/07 15:28:21]

Please also pass the |options| argument to subscribe() on line 27. Even if we
don't use it yet, we'll most likely want to at some point.

[Peter Beverloo, 2015/05/07 15:28:21]

s/(arguments|arg)/options/

[Miguel Garcia, 2015/05/07 19:40:46]

Done.

[Miguel Garcia, 2015/05/07 19:40:46]

Done.

         switch (event.data.command) {
             case 'permissionState':
-                self.registration.pushManager.permissionState().then(function(permissionStatus) {
+                self.registration.pushManager.permissionState(arguments).then(function(permissionStatus) {
                     port.postMessage({ command: event.data.command,
                                        success: true,
                                        permission: permissionStatus });
                 }).catch(makeErrorHandler(event.data.command));
                 break;
 
             case 'subscribe':
                 self.registration.pushManager.subscribe().then(function(subscription) {
                     lastSeenSubscription = subscription;
                     port.postMessage({ command: event.data.command,
@@ skipping 43 matching lines @@
 });
 
 function makeErrorHandler(command) {
     return function(error) {
         var errorMessage = error ? error.message : 'unknown error';
         port.postMessage({ command: command,
                            success: false,
                            errorMessage: errorMessage });
     };
 }